Threading device for shuttles.



I. SNOW.

THREADING DEVICE FOR SHUTTLES.

APPLICATION FILED JAN. 10, 1913.

t 1 'WL S'Z Patented Oct. 7, 1913.

y WITNESSES: IVVENTOR.

ATTORNEY.

$TA TBS @ldldil ISAAC SNOW, 0E LAWRENCE, MAfiSAGI-IUSECETEJ, ASSIGNOR (3F ONE-HAL]? TO HARRY CLOUGH, 0F LA'WRENGE, MASSACHUSETTS.

THREADING DEVICE FOR SI-IUTTLES.

Application filed January 10, 1913.

To all whom it may concern:

Be it known that T, IsAAo Snow, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain new and use ful Improvements in Threading Devices for Shuttles, of which the following is a specification.

My invention relates to threading devices for shuttles of the type wherein the shuttle can be threaded either by hand or by the operation of an automatic loom without the use of suction.

Mv invention is intended especially for use as an automatic threader. In such a device, the passing of the shuttle back and forth across the loom carries the filling into the shuttle eye.

The advantages of my device are its cheapness as it is made of substantially one piece of metal and may readily be stamped and formed into shape, and the fact that the filling when once it has got into place in the shuttle eye cannot unthread. It may be made of sheet metal and is therefore much lighter, stronger and cheaper than a casting.

In the drawings, Figure 1 is a plan view of the front or eye end of the shuttle with one form of my device in place. Fig. 2 is an elevation from the right or eye side of the shuttle, parts being broken away to show the construction. Fig. 3 is a sectional elevation from the front on line X-Y of Fig. 1. Fig. l is a sectional elevation from the back on line OP of Fig. 1, part of the bobbin being broken away. Fig. 5 is an elevation of my threader removed from the shuttle the same as seen from the right. Fig. 6 is a sectional eleva'ion as seen from the left on line MN of Fig. 1. Figs. 7, 8, 9, 10 and 11 are sectional elevations of modified forms of my device seen as from the back or from the bobbin recess on a line such as OP of Fig. 1, with the bobbin omitted.

A represents tie wood of the shuttle, B the bobbin and C the bobbin recess.

E represents a recess cut into wood A which for convenience T will call the threader recess. This threader recess E comprises four parts. First, the portion 18 which is cut to fit the threader proper F and which at and 61 is cut away to receive cars 83 and 34. This portion 18 is formed to receive and closely fit the bottom 30 of the threader and the sides 31 and 32. Second,

Specification of Letters Eatent.

Patented Oct. '7, 1913.

Serial 1%. 741,294.

the neck 19 which is almost directly in front of the end of bobbin B and is so formed that it makes a shoulder with portion 18 and registers with the inside of threader F at the bottom. Third, the portion 20 of the threader recess which continues forward from the bottom 30 of threader F sweeping upward to a point at the right of and near the metal tip of the shuttle. The end of this portion 20 is somewhat below the level of the top of the shuttle on account of the tapering pointthereof. The portion 21 of threader recess E forms a sort of ledge beginning at the left front portion of the bobbin recess and continuing forward on a level with the top of ear 33 substantially on the same level along the side of threader F as shown. It is recessed at the side to receive threader F. The bottom of portion 21 is substantially level and it as well as its outside wall are close to the tip of the top guide plate of the threader. As shown in Fig. 8, the portion 20 next the shuttle eye is perpendicular and at its bottom slopes up to the edge of ledge 21.

A slot 22 is cut through the wood on the right of the shuttle and enters the portion 18 of the threader recess. This slot enters an eye cut in the wood. At the top and ends, slot is suitably rounded and smoothed so that the filling will have no chance to catch anywhere.

The body or barrel of threader F at the oottom 3G is of semi-cylindrical form while the side walls 31 and continue straight upward for a certain distance. is bent outward on one side and another ear 3% on the other side to rest in recesses 60 and (31 cut into the wood on each side of the threader recess Screws and 63 pass through suitable holes in each ear 33 and 3st into the wood A of the shuttle and hold threader F in place. The top edge 35 of side 31 is preferably so formed as to curve from each end upward and to just pass inside the depending tip 37 of a top guide plate 36 which an extension of side 32 bent over so that it slopes down and to the left as shown in Fig. 4-. The back edge 51, nearest bobbin B, of top guide plate 36 has a long slope as shown in Fig. 1, while the front edge 50 slopes slightly backward in line with slots 38 and 22. The slot 38 in the side 32 when the parts are in place adjoins the inner end of slot 22 in the wood of An ear the shuttle and slopes back as does slot 22 until it connects by a change of direct-ion with the eye 39 of the threaderFat the forward edge thereof. This eye 39'registers with the eye 23 in the wood when the parts are in place. The top edge of side 31 is preferably curved upward from the end of ear 33 to its high point inside of tip 37 thence down again to the level of the bottom of ledge 21 of thread-er recess F. The outside of the top edge 35 is preferably rounded or beveled as shown in Figs. 3 and 4.

It will be observed that if the filling K shouldstartat the center of the end of bobbin I-l it would be below and to the right of 'the tip of the top guide plate 36 which to run out in a well known manner.

forms a hook 37. When in place passing through eyes 39 and 23, the filling will pass through the eyes 39 and 23 bearing against the pins 43 and 414 which I prefer to drive through the eye in the wood.

If a bobbin is used which is wound as shown in Fig. I in such a direction that when the filling K unwinds, it passes under the end of the bobbin from left to right toward. the shuttle eye, and the filling is drawn forward, it is carried with a sweep ing action in a direction which will carry it underneath the tip or hook 37. lVhen it once catches under hook 37 it cannot escape. If the filling is then drawn back and to the right, it is drawn along the front edge 50 of top plate 36 down through slots 23 and 38 into the shuttle eyes.

In an automatic loom, the end of the filling K is fastened to a stationary part D in front of where the front of the shuttle will be when a new bobbin is inserted in the shuttle. lVhen inserted, the bobbin and shuttle are thrown across the lay causing the filling As it runs out, the filling slips along the back edge 51 of top guide plate 36 and as this guide plate slopes downward to the left,

it slips over the end of tip 37 under the pointthereof. This travel of the filling is caused, as will be seen by examining the full line in Fig. 2, by the tendency to straighten the bend in the filling and by reason of the sweeping or bellying action as it 'unwinds around the end of bobbin B. After it is once under tip 37 on account of the curved shape of the top edge 35 of side 31, it tends to straighten and therefore to slip up and over the top thereof, as shown by the dotted lines in Figs. 4 and 6 finally landing in the barrel of the threader. hen

the shuttle is returned, the filling K has been held by the shifting of the warp threads close to the cloth on the other side of the loom so that it is pulling in the opposite direction whereby as the filling runs'out, it is dragged along the front edge 50 of top guide plate 36 and sinks natural-1y through slot 22 in the wood and slot 38 in the metal into the eyes 23 and 39. Slot 38 preferably makes a sharp turn as shown in Fig. 5 which tends to prevent the filling. from slipping back through the slot or unthreading.

In Figs. 7, 8, 9, 10 and 11, I show different forms of my threader. In Fig. 7, top guide plate slopes down to the left and has no hook whatever but merely passes beyond the side wall 71 into a recess 72corresponding to portion 21 shaped from the threader recess in the wood B of the shuttle, as shown.

In Figs. 7, 8, 9, 10 and 11, I show a plate 93 inserted through the side of the threader and cut away at its bottom ll to serveas a guide for the filling from the bobbin to the shuttle eye, and to keep the filling near the center of the bobbin as it runs out. In Fig. 8, the top guide plate 73 is level and terminates in a hook 74L while the side wall 75 is bent inward to form a hook 76. This gives two hooks 74 and 76 to prevent the filling from escaping. In this form, the top guide plate 73 at'its back edge is beveled downward and to the left, as shown at 77. In Fig. 9, the top plate 78 slopes upto the left and terminates. in a square hook 79 which passes beyond the sidewall 80 into a recess 81 corresponding to portion 21 shaped from the threader recess in the wood II. Fig. 10 shows a construction which may he used wlth a bobbin which is wound either to the right or to the left.. The top. guide plate is the samesas 36 and the shape of the bottom and sides is the same. The. wall on one side 91 is extended at the.

The

bent toward the deflector plate and is provided with saw teeth 95 which rake downward. The result of this construction 1s that the deflector plate 92 tends to direct the fill- .ing downward toward teeth 95 and when once caught therein it is held until it either drops to a lower tooth or catches'under the hook 96 in which top plate 90 terminates.

In Fig. 11,1 show a construction similar to Fig, 10 except that the deflector plate 98 which corresponds with plate 92 is also pro extended upward and bent over beyond the top edge of the other vertical side wall of the threader. This other side wall may or may not be curved and may assume Various forms at its top edge to cooperate with the tip of the top guide plate. The top guide plate slopes forward and away from the shuttle eye on its back edge and backward toward the shuttle eye on its forward edge. For an automatic shuttle, the top guide plate should also slope downward especially at its back edge and to the left. With a hand threader, the construction shown in Fig. 9 may be used. The wood of the shuttle is cut away adjoining, below and forward from the tip of the top guide plate opposite the shuttle eye so as to receive the filling and allow it to swing under the tip. The wood of the shuttle may be cut away to form a slot and eye which cooperate with the slot and eye in the metal of the threader. The tip of the top guide plate on the side opposite the shuttle eye may be bent downward into various forms of hooks and the top edge of the adjoining side wall may be bent into a hook if desired. To accommodate bobbins wound in the reverse manner, the side wall of the threader at the back nearest the shuttle eye may be bent inward and cut in a downward curve with or without downwardly raking teeth so as to form a deflector plate to direct the filling over and down toward the other wall which may be provided with downwardly and inwardly raking teeth.

What I claim as my invention and desire to cover by Letters Patent, is:

1. In a shuttle, the combination of a wooden body having a bobbin recess and a' threader recess from which a slot and eye extend through the side, with a threader which fits into the threader recess and which i has a barrel and vertical side walls, of which the side wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the wooden body and said side wall being ex tended upward and bent over beyond the top edge of the other side wall forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader, and means for fastening the threader in place as described.

In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess from which a slot and eye extend through the side, with a threader which fits into the threader recess and which has a barrel and vertical side walls of which the side wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the wooden body said side wall being extended upward and bent over forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader, said top guide plate terminating in a hook which extends over and beyond the top edge of the other side wall which is curved from each end upward toward a point adjoining said hook and is beveled on the outside, and means for fastening the threader in place as described.

In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess formed to receive a threader and extended forward from the bottom and which has a longitudinal ridge on one side and connects on the other side with a slot and eye which extend through the side, with a threader which fits into the threader recess and which has a barrel and vertical side walls of which the side wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the wooden body and said side wall being extended upward and bent over beyond the top edge of the other side wall forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader, and means for fastening the threader in place as described.

4. In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess from which a slot and eye extend through the side, with a threader which fits into the threader recess and which has a barrel and vertical side walls of which the side wall adjoining the shuttle eye has a slot which connects with an eye, both of which register with the slot and eye in the wooden boc y and said side wall being extended upward and bent over and downward beyond the top edge of the other side wall forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader, and means for fastening the threader in place as described.

5. In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess from which a slot and eye extend through the side, with a threader which fits into the threader recess and which has a barrel and vertical side walls of which the side wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the wooden body and said side wall being ex tended upward and bent over beyond the top edge of the other side wall forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader, together with a backward extension of the side wall which has the eye bent at right angles and curved over and down to form a deflector plate, and an extension of the other side wall opposite the deflector plate provided with downwardly raking teeth, and nieans for fastening the threader in place as described.

6. In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess from which a slot and eye extend through the side, with a threader which fits into the threader recess and which has a barrel and Vertical side walls of which the side wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the Wooden body and said side wall being extended upward and bent over beyond the top edge of the other side wall forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threadcr, together with a backward extension of the side wall which has the eye bent at right angles and curved over and down to form a deflector plate with downwardly raking teeth, and an extensionof the other side Wall opposite the deflector plate provided with downwardly raking teeth and means for fastening the threader in place as described.

7. In a shuttle, the combination of a wooden body having a bobbin recess and a threader recess from which a slot and eye extend through the side, with a threader which. fits into the threader recess and which has a barrel and vertical side walls'of which the side Wall adjoining the shuttle eye has a slot which connects with an eye both of which register with the slot and eye in the wooden body said side wall being extended upward and bent over forming a top guide plate which slopes from the back forward away from the shuttle eye and from the front backward to a point adjoining the slot in the threader and extends over and beyond the top edge of the other side wall which is curved from each end upward toward a point adjoining the portion of the top guide plate which extends over it, and means for fastening the threader in place as described.

In testimony whereof l hereto affix my signature in presence of two witnesses.

ISAAC SNOW;

Witnesses: r 1

GARDNER A. PEARSON,

HELEN F. L ESQHNER Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

